DOI: 10.1002/2016GL067695
论文题名: Modeling of Store Gletscher's calving dynamics, West Greenland, in response to ocean thermal forcing
作者: Morlighem M. ; Bondzio J. ; Seroussi H. ; Rignot E. ; Larour E. ; Humbert A. ; Rebuffi S.
刊名: Geophysical Research Letters
ISSN: 0094-9198
EISSN: 1944-8929
出版年: 2016
卷: 43, 期: 6 起始页码: 2659
结束页码: 2666
语种: 英语
英文关键词: calving
; glaciology
; ice-ocean interactions
; inverse modeling
; Store Gletscher
Scopus关键词: Ice control
; Inverse problems
; Oceanography
; Calving
; Glaciology
; Ice-ocean interactions
; Inverse modeling
; Store Gletscher
; Ice
; atmospheric forcing
; fjord
; glacier dynamics
; glacier mass balance
; glacier retreat
; glaciology
; ice-ocean interaction
; iceberg calving
; inverse analysis
; snowmelt
; vulnerability
; Arctic
; Greenland
; West Greenland
英文摘要: Glacier-front dynamics is an important control on Greenland's ice mass balance. Warmer ocean waters trigger ice-front retreats of marine-terminating glaciers, and the corresponding loss in resistive stress leads to glacier acceleration and thinning. Here we present an approach to quantify the sensitivity and vulnerability of marine-terminating glaciers to ocean-induced melt. We develop a plan view model of Store Gletscher that includes a level set-based moving boundary capability, a parameterized ocean-induced melt, and a calving law with complete and precise land and fjord topographies to model the response of the glacier to increased melt. We find that the glacier is stabilized by a sill at its terminus. The glacier is dislodged from the sill when ocean-induced melt quadruples, at which point the glacier retreats irreversibly for 27 km into a reverse bed. The model suggests that ice-ocean interactions are the triggering mechanism of glacier retreat, but the bed controls its magnitude. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84977883048&doi=10.1002%2f2016GL067695&partnerID=40&md5=d860cba56f2efcc72b5bbeb51918f0b7
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10161
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Department of Earth System Science, University of California, Irvine, CA, United States
Recommended Citation:
Morlighem M.,Bondzio J.,Seroussi H.,et al. Modeling of Store Gletscher's calving dynamics, West Greenland, in response to ocean thermal forcing[J]. Geophysical Research Letters,2016-01-01,43(6).